Automatic firearm.



P. MAUSER.

AUTOMATIC FIREARM.

APPLICATION FILED PEBJZ, 1913.

1,180,312. Patented M21122, 1915.

2 SHEETS-SHEET 1.

INVEN TOR- WITNESSES P. MAUSER.

AUTOMATIC FIREARM.

APPLICATION FILED r2342, 191s.

1,1 30,312, Patented Mar. 2, 1915.

2 SHEETS-SHEET 8.

PAUL MAUSER, F OBERNDORF, GERMANY.

AUTOMATIC FIREARM.

Specification of Letters Patent.

Patented Mar. 2,1915.

Application filed February 12, 1913. Serial No. 747,920.

To all whom it may concern Be it known that I, IAUL MAUsnR, royal privy commercial counc11or, a sub ect of the King of Wurttemberg, res1dm at Oberndorf-on-the-Neckar, in the Kingdom of Wurttember Germany, have invented certain new antF useful Improvements Relating to Automatic Firearms, of whlch the following is a full, clear, and. exact description.

The invention relates to firearms with detachable magazine and means for lockmg the breech block in the open position after the last shot from the magazine is fired.

The invention has for its object to provide improved means for holding the breech block in the open position when. the magazine is removed.

An embodiment of the invention isillustrated by way of example in the accompanying drawings, in which:-

Figure 1 shows the weapon partly insection and partly in elevation with magazine insertedl Fig. 2 shows the position of the parts with the magazine withdrawn. Figs. 3, 4 and 5 illustrate the bell crank lever which acts both as a locking member and an ejector in various elevations. Fig. 6 is-a section like Fig. 1, but taken in a vertical plane behind that in Fig. 1. It shows the locking of the breech block by the car: tridge follower. Fig. 7 is a section like Fig.

1, viewed from the other side, showing thecoiiperation of the rear wall w of the magazine w with the projection 70 of the lever is.

A member is, which acts both as locking member and ejector, presents the form of a bell crank or triangular lever and is pivotally mountedat g in the frame 9 of the weapon. Its rear arm 70 serves to lock the breech block when the magazine is withdrawn, while its front arm 70 acts as an ejector when the magazine is inserted. The spring member k is acted upon by a spring 7 which is held in the frame by two clamps 9 formed on the frame and embrace the spring in the middle of its length on both sides (Fig. 1). This spring f serves also to hold the magazine to in the frame. For this purpose it is provided with a nose at its lower portion engaging a notch in the rear wall w lVhen the magazine w is inserted, the lever is is held by the rear wall to of the magazine acting on the projection k of the lever k (Fig. 7) against the pressure of the spring 7 of the magazine (Fig. 1).

in the position in which it acts (with its front arm E) as ejector (Fig. 1). l/Vhen the last shot from the magazine is fired, the breech block '0 is looked after recoil in the rearward (open) position by the magazine follower 2o (Fig. 6). Now the empty magazlne is withdrawn to be replaced by a full one. Of course the magazine follower 'w is also removed so that the breech block would be released and return into the forward (closed) position. But now the lever is which is no more locked by themagazine wall in the ejector position (Fig. l) is rocked by the spring f acting on the stud In so that the rear arm is of the lever enters a recess a in the breech block 1) thereby lockmg the same in the open position (Fig. 2). When the magazine is again inserted in the firearm its rear wall w presses the projection I0 of the lever k upward, so that the lever is again rocked in the ejector position (Fig. 1) against the action of the spring 7.

The breech block '0 is thereby released from engagement with the rear arm is of the lever is so that it can freely move in the closed position. In this movement it pushes the first cartridge from the magazine into the barrel so that the arm is now again ready for firing.

What is claimed is 1. In a firearm, the combination of a breech block, a detachable magazine, a pivoted two-armed lever, one arm of said lever being adapted to act as an ejector when the magazine is in the frame, and the other arm being adapted to lock the breech block in the open position when the magazine is removed, and means for bringing said lever into locking engagement with said breech block, said means being adapted to be counteracted by said magazine to hold said lever out of locking engagement with said breech block. 2. In a firearm, the combination of a. breech block, a detachable magazine, a pivoted two-armed lever, one arm of said lever being adapted to act as an ejector when the magazine is in the frame and the other armbeing adapted to lock the breech block in the open position when the magazine is removed, and a spring for holding said magazine in the frame and adapted to press said lever into locking engagement with said breech block.

3. In a firearm,

the combination of a breech block,

a detachable magazine, means connected; with said magazine for locking saidlbreechf block in the open position after the -la'st shot from the magazine is fired, and

a pivotedtwohrmed lever, one arm of said Lleverbein'g adapted to act as an ejector when the magazine is in the-frame and the other arm bein'g 'adapted to holdathe breech block in the open position whenthe magazine'is removed, said magazine, when in position,- holding said lever with its lockingarin out.

of locking position.

4. In a firearm, the combination of a- Copies of this patent may be obtained for oted two-armed lever, one arm of said lever being adapted to act as an e ector when the magazine is in the frame, and the other arm being adapted to hold the breech block in the open position when the magazine with the cartridge follower is removed, said magazine, when in position, holding said lever with its locking arm out of locking position.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

\ PAUL MAUSER.

Witnesses HENRY HASPER, .WOLDEMAR HAUPT.

five cents each, by addressing the Commissioner of Patents.

Washington, D. G." 

